Weather Records on 21 June 1979

857 weather records were set or tied worldwide on 21 June 1979. Highest significance: Mio Hydro Plt, US.

Key Facts for 21 June 1979

On 21 June 1979, 857 weather records were set or tied at long-record stations worldwide.
175 were record highs and 181 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 26 monthly and 831 daily.
Mio Hydro Plt set a daily record precipitation of 43.7 mm (1.7 in) on 21 June 1979.
Across 165 earlier years (1802 to 2026) the same calendar date averaged 429 records.

Record Map

857 stations

857 station records on 21 June 1979 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 June 1979: highest significance records shown on the map
Station	Country	Type	Value	Significance
Mio Hydro Plt	United States	Record daily precipitation	43.7 mm (1.7 in)	69 of 100 (Major)
Maclean (McLachlan Street)	Australia	Record daily precipitation	113.2 mm (4.5 in)	62 of 100 (Major)
Victoria Hill	Australia	Record daily precipitation	55.6 mm (2.2 in)	59 of 100 (Notable)
Mungindi (Wilgabah)	Australia	Record daily precipitation	136.6 mm (5.4 in)	57 of 100 (Notable)
Deepwater Post Office	Australia	Record daily precipitation	44.0 mm (1.7 in)	56 of 100 (Notable)
Lismore (Centre Street)	Australia	Record daily precipitation	91.0 mm (3.6 in)	55 of 100 (Notable)
Gar	Russia	Record daily precipitation	55.1 mm (2.2 in)	55 of 100 (Notable)
Houghton Lake 6 WSW	United States	Record daily precipitation	58.7 mm (2.3 in)	55 of 100 (Notable)
Laidley Post Office	Australia	Record daily precipitation	70.2 mm (2.8 in)	54 of 100 (Notable)
Jimbour State School	Australia	Record daily precipitation	84.6 mm (3.3 in)	53 of 100 (Notable)
Mogil Mogil (Benimora)	Australia	Record daily precipitation	45.8 mm (1.8 in)	53 of 100 (Notable)
South Grafton Post Office	Australia	Record daily precipitation	83.0 mm (3.3 in)	53 of 100 (Notable)
Mungindi Post Office	Australia	Record daily precipitation	51.0 mm (2.0 in)	52 of 100 (Notable)
Glen Innes Post Office	Australia	Record daily precipitation	40.6 mm (1.6 in)	52 of 100 (Notable)
Nerang Gilston Rd	Australia	Record daily precipitation	94.0 mm (3.7 in)	51 of 100 (Notable)
Rowena (Waroonga)	Australia	Record daily precipitation	57.2 mm (2.3 in)	51 of 100 (Notable)
Bingara (Keera)	Australia	Record daily precipitation	50.8 mm (2.0 in)	51 of 100 (Notable)
Coraki Post Office	Australia	Record daily precipitation	74.8 mm (2.9 in)	51 of 100 (Notable)
Nymboida (Armidale Road)	Australia	Record daily precipitation	85.8 mm (3.4 in)	51 of 100 (Notable)
Tomewin (Border Gate)	Australia	Record daily precipitation	133.5 mm (5.3 in)	51 of 100 (Notable)
Forest Hill	Australia	Record daily precipitation	77.0 mm (3.0 in)	50 of 100 (Notable)
Gatton Allan Street	Australia	Record daily precipitation	74.0 mm (2.9 in)	50 of 100 (Notable)
Gallangowan Forestry	Australia	Record daily precipitation	62.0 mm (2.4 in)	50 of 100 (Notable)
Condamine Plains	Australia	Record daily precipitation	75.0 mm (3.0 in)	50 of 100 (Notable)
Vladikavkaz	Russia	Record daily precipitation	80.0 mm (3.1 in)	50 of 100 (Notable)
Blakefield	Australia	Record daily precipitation	69.8 mm (2.7 in)	49 of 100 (Notable)
Old Koreelah (White Swamp (Ede	Australia	Record daily precipitation	135.0 mm (5.3 in)	49 of 100 (Notable)
Yamba Pilot Station	Australia	Record daily precipitation	110.3 mm (4.3 in)	49 of 100 (Notable)
Sombrerete (Dge)	Mexico	Record low minimum temperature	5.0 C (41.0 F)	49 of 100 (Notable)
Indooroopilly Bowls Club	Australia	Record daily precipitation	86.4 mm (3.4 in)	48 of 100 (Notable)
Coolabah Post Office	Australia	Record daily precipitation	71.0 mm (2.8 in)	48 of 100 (Notable)
Rosewood Walloon Rd	Australia	Record daily precipitation	87.0 mm (3.4 in)	47 of 100 (Notable)
Moorang	Australia	Record daily precipitation	112.0 mm (4.4 in)	47 of 100 (Notable)
Dalby Post Office	Australia	Record daily precipitation	99.4 mm (3.9 in)	47 of 100 (Notable)
Mount Irving	Australia	Record daily precipitation	92.0 mm (3.6 in)	47 of 100 (Notable)
Bonnie Brae	Australia	Record daily precipitation	122.6 mm (4.8 in)	47 of 100 (Notable)
Pallamallawa Post Office	Australia	Record daily precipitation	51.8 mm (2.0 in)	47 of 100 (Notable)
Cass Lake	United States	Record daily precipitation	54.6 mm (2.1 in)	47 of 100 (Notable)
Grandchester Symes St	Australia	Record daily precipitation	86.4 mm (3.4 in)	46 of 100 (Notable)
Oxenford (Oberon Way)	Australia	Record daily precipitation	75.2 mm (3.0 in)	46 of 100 (Notable)
Walgett Council Depot	Australia	Record daily precipitation	33.0 mm (1.3 in)	46 of 100 (Notable)
Byron Bay (Jacaranda Drive)	Australia	Record daily precipitation	80.6 mm (3.2 in)	46 of 100 (Notable)
Rozdilna	Ukraine	Record daily precipitation	61.2 mm (2.4 in)	46 of 100 (Notable)
Central Michigan UNIV	United States	Record daily precipitation	35.1 mm (1.4 in)	46 of 100 (Notable)
Benarkin Forest Station	Australia	Record daily precipitation	67.4 mm (2.7 in)	45 of 100 (Notable)
Rosevale	Australia	Record daily precipitation	80.0 mm (3.1 in)	45 of 100 (Notable)
Tallebudgera Guineas Creek Roa	Australia	Record daily precipitation	86.0 mm (3.4 in)	45 of 100 (Notable)
Crows Nest	Australia	Record daily precipitation	80.2 mm (3.2 in)	45 of 100 (Notable)
Bowenville	Australia	Record daily precipitation	75.4 mm (3.0 in)	45 of 100 (Notable)
Canning Downs	Australia	Record daily precipitation	67.0 mm (2.6 in)	45 of 100 (Notable)
Hermitage	Australia	Record daily precipitation	64.4 mm (2.5 in)	45 of 100 (Notable)
Stanthorpe Leslie Parade	Australia	Record daily precipitation	51.0 mm (2.0 in)	45 of 100 (Notable)
Tweed Heads Golf Club	Australia	Record daily precipitation	60.0 mm (2.4 in)	45 of 100 (Notable)
Dusseldorf-Sudfriedhof	Germany	Record daily precipitation	33.3 mm (1.3 in)	45 of 100 (Notable)
Myra	Australia	Record daily precipitation	66.0 mm (2.6 in)	44 of 100 (Notable)
Oakey Post Office	Australia	Record daily precipitation	80.0 mm (3.1 in)	44 of 100 (Notable)
Pittsworth	Australia	Record daily precipitation	67.0 mm (2.6 in)	44 of 100 (Notable)
Whian Whian (Rummery Park)	Australia	Record daily precipitation	151.0 mm (5.9 in)	44 of 100 (Notable)
Blanco	United States	Record high minimum temperature	27.8 C (82.0 F)	44 of 100 (Notable)
Mt Crosby	Australia	Record daily precipitation	74.4 mm (2.9 in)	43 of 100 (Notable)

Counts by Type and Timescale

857 records

Records set or tied on 21 June 1979 by type: Highest daily maximum 68, Lowest daily maximum 72, Highest daily minimum 107, Lowest daily minimum 109, Heaviest daily rainfall 501.

Records on 21 June 1979 by type
Record type	Records
Highest daily maximum	68
Lowest daily maximum	72
Highest daily minimum	107
Lowest daily minimum	109
Heaviest daily rainfall	501
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 21 June 1979 by timescale: all-time 0, monthly 26, daily 831.

How Much Records Were Beaten By

752 broken records

Margins by which the 752 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 135.0. Ties are not counted.

Top 20 by Significance

21 June 1979

Top 20 records on 21 June 1979 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 June 1979	Mio Hydro Plt, US	daily rain	43.7 mm (1.7 in)	35.3 mm (1.4 in)	76 years	69 of 100 (Major)
21 June 1979	Maclean (McLachlan Street), AU	daily rain	113.2 mm (4.5 in)	66.5 mm (2.6 in)	80 years	62 of 100 (Major)
21 June 1979	Victoria Hill, AU	daily rain	55.6 mm (2.2 in)	41.9 mm (1.6 in)	62 years	59 of 100 (Notable)
21 June 1979	Mungindi (Wilgabah), AU	monthly rain	136.6 mm (5.4 in)	91.9 mm (3.6 in)	10 years	57 of 100 (Notable)
21 June 1979	Deepwater Post Office, AU	daily rain	44.0 mm (1.7 in)	22.9 mm (0.9 in)	89 years	56 of 100 (Notable)
21 June 1979	Lismore (Centre Street), AU	daily rain	91.0 mm (3.6 in)	45.0 mm (1.8 in)	80 years	55 of 100 (Notable)
21 June 1979	Gar, RU	daily rain	55.1 mm (2.2 in)	41.8 mm (1.6 in)	37 years	55 of 100 (Notable)
21 June 1979	Houghton Lake 6 WSW, US	daily rain	58.7 mm (2.3 in)	38.4 mm (1.5 in)	36 years	55 of 100 (Notable)
21 June 1979	Laidley Post Office, AU	daily rain	70.2 mm (2.8 in)	44.8 mm (1.8 in)	53 years	54 of 100 (Notable)
21 June 1979	Jimbour State School, AU	daily rain	84.6 mm (3.3 in)	53.1 mm (2.1 in)	12 years	53 of 100 (Notable)
21 June 1979	Mogil Mogil (Benimora), AU	daily rain	45.8 mm (1.8 in)	22.9 mm (0.9 in)	78 years	53 of 100 (Notable)
21 June 1979	South Grafton Post Office, AU	daily rain	83.0 mm (3.3 in)	67.8 mm (2.7 in)	52 years	53 of 100 (Notable)
21 June 1979	Mungindi Post Office, AU	daily rain	51.0 mm (2.0 in)	19.2 mm (0.8 in)	78 years	52 of 100 (Notable)
21 June 1979	Glen Innes Post Office, AU	daily rain	40.6 mm (1.6 in)	17.2 mm (0.7 in)	89 years	52 of 100 (Notable)
21 June 1979	Nerang Gilston Rd, AU	daily rain	94.0 mm (3.7 in)	57.9 mm (2.3 in)	78 years	51 of 100 (Notable)
21 June 1979	Rowena (Waroonga), AU	daily rain	57.2 mm (2.3 in)	36.9 mm (1.5 in)	21 years	51 of 100 (Notable)
21 June 1979	Bingara (Keera), AU	daily rain	50.8 mm (2.0 in)	22.1 mm (0.9 in)	80 years	51 of 100 (Notable)
21 June 1979	Coraki Post Office, AU	daily rain	74.8 mm (2.9 in)	39.7 mm (1.6 in)	80 years	51 of 100 (Notable)
21 June 1979	Nymboida (Armidale Road), AU	daily rain	85.8 mm (3.4 in)	55.6 mm (2.2 in)	53 years	51 of 100 (Notable)
21 June 1979	Tomewin (Border Gate), AU	daily rain	133.5 mm (5.3 in)	97.9 mm (3.9 in)	53 years	51 of 100 (Notable)

Significance is a score from 0 to 100 combining margin, the age of the old record and the length of the station's record. How it is computed.

The Same Date in Other Years

1802 to 1979

Records set or tied on this calendar date in each year from 1802 to 1979. 1979 had 857 records.

Counts for years before the ledger starts come from the same station rules.

Records on 06-21 in each year
Year	Records
1802	1
1803	2
1805	1
1814	1
1821	3
1828	1
1831	1
1839	2
1846	1
1853	1
1855	1
1861	3
1865	1
1868	1
1869	4
1870	3
1871	1
1873	1
1874	1
1875	2
1879	1
1880	1
1881	1
1882	1
1883	1
1884	2
1885	1
1886	3
1887	1
1888	3
1889	1
1891	1
1892	2
1893	7
1895	6
1896	3
1897	3
1898	6
1899	6
1900	6
1901	5
1902	20
1903	15
1904	7
1905	14
1906	19
1907	15
1908	20
1909	19
1910	36
1911	12
1912	14
1913	34
1914	24
1915	40
1916	80
1917	97
1918	77
1919	32
1920	42
1921	85
1922	43
1923	229
1924	124
1925	333
1926	162
1927	146
1928	139
1929	84
1930	177
1931	340
1932	180
1933	645
1934	223
1935	247
1936	642
1937	475
1938	396
1939	250
1940	674
1941	401
1942	340
1943	439
1944	426
1945	709
1946	386
1947	637
1948	392
1949	391
1950	329
1951	347
1952	502
1953	761
1954	501
1955	271
1956	534
1957	932
1958	627
1959	356
1960	471
1961	956
1962	176
1963	667
1964	458
1965	400
1966	467
1967	789
1968	654
1969	687
1970	614
1971	394
1972	934
1973	683
1974	598
1975	996
1976	746
1977	476
1978	368
1979	857
1980	677
1981	889
1982	658
1983	752
1984	913
1985	516
1986	601
1987	940
1988	1,834
1989	856
1990	847
1991	1,067
1992	1,679
1993	939
1994	777
1995	978
1996	1,075
1997	1,037
1998	1,746
1999	994
2000	1,212
2001	658
2002	828
2003	1,034
2004	697
2005	1,090
2006	774
2007	1,085
2008	580
2009	1,060
2010	852
2011	1,340
2012	1,151
2013	571
2014	434
2015	707
2016	877
2017	954
2018	577
2019	969
2020	519
2021	1,132
2022	774
2023	987
2024	679
2025	1,536
2026	736

Download the Data

Data for records on 1979-06-21: CSV or JSON. Field meanings are on the data page.

Sources: Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Made with Natural Earth. Public domain map data. Borders are Natural Earth's de facto depiction. Data as of 2026-10-13 (13 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-12. Last revised 12 October 2026 (2026-10-12).

Margin	Records
0 to 20	568
20 to 40	129
40 to 60	39
60 to 80	6
80 to 100	6
100 to 120	2
120 to 140	2